133020545 has 16 divisors (see below), whose sum is σ = 186153600. Its totient is φ = 91212912.

The previous prime is 133020541. The next prime is 133020553. The reversal of 133020545 is 545020331.

It is not a de Polignac number, because 133020545 - 2² = 133020541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133020545.

It is not an unprimeable number, because it can be changed into a prime (133020541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37067 + ... + 40496.

It is an arithmetic number, because the mean of its divisors is an integer number (11634600).

Almost surely, 2^133020545 is an apocalyptic number.

It is an amenable number.

133020545 is a deficient number, since it is larger than the sum of its proper divisors (53133055).

133020545 is an frugal number, since it uses more digits than its factorization.

133020545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77589 (or 77575 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 133020545 is about 11533.4532989907. The cubic root of 133020545 is about 510.4731543832.

Adding to 133020545 its reverse (545020331), we get a palindrome (678040876).

The spelling of 133020545 in words is "one hundred thirty-three million, twenty thousand, five hundred forty-five".